OK i have a 00 civic si i had a b20 engine in the car so i just recently purchased a b16a2 obd2 engine and about 5 hours ago i finish swapping the engine in the car but the check engine light its on so i try to connect the scanner and cant read anything it says linking error on the scanner i don't know what to do and also the rpm gauge don't work and neither the speedometer so please if somebody have any info about this problem let me know i am using a p2t ecu and the wire harness i got the guy who i bought from said it came out of a 99 si the car is running good but the only problems i have are the one just mention thanks for any help.